The Lion Guard Adventure allows young guests to become honorary members of the Lion Guard as they explore the park in search of five main characters from the popular TV movie - Kion, Buga, Fuli, Beshte and Ono. These characters are represented as colorful statues that are perfect for a kid-sized photo-op.
Like the movie, the experience encourages interest in protecting animal and caring for nature. Once they complete the adventure, each child can take a special pledge to become an honorary member of "The Lion Guard" and receive a special button.
The experience is currently being offered through late March, but my suspicion is that if is popular with park guests that Disney may decide to continue this on a regular basis similar to the way similar interactive experiences are available in Magic Kingdom and Epcot.